andedk, I'm glad this thread was helpful.
Addressing your questions...
andedk wrote: ↑Mon Jun 26, 2023 7:13 am
1. The piece closest to the objective (#12) is listed as: 52mm to objective thread adapter (52mm male, objective thread female)
I am not coming up with anything I recognize when I search for this. Is there another description I might add to find this?
Different objectives have different threads, so what you need is to specify the exact thread for the objective that you have. The most common threads are RMS, 25mm, and 26mm. (More details at
viewtopic.php?f=29&t=11710 .)
In the example shown, that gold-colored Nikon objective uses a 25 mm thread, so I would be looking for keywords like "52 mm 25mm objective adapter". On ebay, that finds for example
https://www.ebay.com/itm/222761714577 . Mitutoyo M Plan Apo objectives use 26 mm threads, finding
https://www.ebay.com/itm/165634680076 , and so on.
2. Both #8 and #9 in the list are referred to as "52mm to 43mm "step down" rings. How are these different? Again, should I search more specifically for the phrase "female-to-female reverse adapter"?
I'm confused. In the posting that starts this thread, what I read is
8. 52mm to 43mm "step down" ring (52mm male, 43mm female, used in reverse to fit the 43mm male threads on the normal rear of the Raynox)
9. 55mm to 52mm "step down" ring with through threads, used here as a 52mm-52mm female-female reverse adapter
The effect of these two rings, used together, is to turn the 43 mm male thread on normal rear of the Raynox into a 52mm female thread into which the objective adapter, part #12, can be screwed.
For part #9, in principle you could go looking for a 52mm-52mm female-female reverse adapter. But such searches usually fail because such parts are rare and search engines don't do anything useful with repeated terms. It is more practical to just go looking for a ring with 52mm female threads that go clear through, as shown by the product pictures. An example is
https://www.ebay.com/itm/252321986118 .
3. For #7, the Raynox-DCR-150 comes up as a snap on. But in the photo (and assemble videos I have watched), it didn't seem to be a snap on. Do I want a snap on? If not, suggestions for finding a non-snap on version?
It's not clear from Raynox literature, but the lens has screw threads and the spring-loaded snap-on adapter is a separate part that comes in the same box. The spring-loaded adaptor is set aside and not used in this application.
--Rik